I just wanted to ask what is the best method of laying these - I am thinking of just putting mortar directly onto the ground and then laying the brick on top. Will this be sufficient to prevent movement (the soil and pebbles will be filled in afterwards) and whether mortar is required between each brick. Is there a more efficient alternative (e.g. concrete?)

Your proposed method will work, but without steel reinforcing the mortar bed will eventually crack and the pavers will move.

I’m really interested in this topic as I’m wanting to do the same. So what steel would you recommend to use and do you put that down first then the mortar on top. I was thinking of pea gravel first then mortar but I’m concerned with movement too